I-D ACTION:draft-armitage-ion-cluster-size-00.txt

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       Title     : Issues affecting MARS Cluster Size                      
       Author(s) : G. Armitage
       Filename  : draft-armitage-ion-cluster-size-00.txt
       Pages     : 8
       Date      : 07/15/1996

IP multicast over ATM currently uses the MARS model [1] to manage the use 
of ATM pt-mpt SVCs for IP multicast packet forwarding. The scope of any 
given MARS services is the MARS Cluster - typically the same as an IPv4 
Logical IP Subnet (LIS). Current IP/ATM networks are usually architected 
with unicast routing and forwarding issues dictating the sizes of 
individual LISes. However, as IP multicast is deployed as a service, the 
sizes of LISes will only be as big as a MARS Cluster can be. This document 
looks at the issues that will constrain MARS Cluster size, and why large 
scale IP over ATM networks might preferably be built with many small 
Clusters rather than few large Clusters.                                   

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